Filter.



ils

1 "WE LsTAT s PATENT OFFICE.

HARLIESTON CORBETT GESNER, OF NEW YORK, N. Y., EXEOUTRIX 0F 1 a v GEORGEW. GESNER; DECEASED.

. FILTER.

ceased, late a citizen of the United States, did

- the alloy, or by ment in Filters, of which the invent acerta'in newand useful Improvespecification. v

In United States Letters Patent No. 604,580, ranted'May 24, 1898; No.642,320, granted fanuary 3.0, 1900, and No. 670,775, granted March 26,1901, to the said GEORGE WQ GESNER are described and claimedcertain'processes of making alloys of iron and hydrogen, the productbeing inv the form of a pig or. ingot, powder, or; scale\. Accordin to.these may be produced by remeltingthe pi s, pow- .der, or scale andpourin patents articles consisting of the" alloy ing heated massesofeating the powder or scale and Welding and shaping it by forging orrolling. In application, Serial No. 268,749, of

molds, by 'forgin r or rol even date herewith, aredescribed and claimedan article consisting of particles of the alloy of iron and hydrogenagglomerated into a j" ing such articles by com 'der'edalloy into a bodyan strong coherent-body and a. process of makres'sing the pow-' odyheating the to a temperature sufficient to causethepar- I "ticles tofrit or partially fuse together, the

said article and process being the invention of the said Gnoaen GEsNER,deceased.

. j of-a porous body The presentinvention is a filter consisting of analloy of iron and hydrogen.

sistance to oxidatlon and corrosion It is unaffected bychlorin, mineralacids, or causfollowing is a the liquid a oy intov 4 plate or tube of analloy of on an This alloy offers extraordinary re- I'atented March 20,190B.

tie alkalies. It is therefore a material which is well suited for theproduction of filters for various uses, whether for filtering'water orcorrosive chemical solutions.

terposed as .a

(partition in" a vessel of any usual or desire construction. The body ispreferably produced by the process of the a plication, its porositybeing dey the size of theparticles into of the heating-furnacaandtheduration of the'firing. The'thickness of the'body may alsobe suitedto the desired completeness and rate of filtration.

The "term filter as used'in the description and claims isintended toinclude an electrolytic diaphragm.

I claim as theinvention of as nd GEORGE W. GEsNER .1. A filter,consistin 2. A filter, consisting of a rigidc,1 porous gen, as setforth.

- 3 A-filter, consisting of a I orous, coherent body ofagglomeratedpartie es of iron and hydrogen, as set'forth.

of a porous body of an alloy of iron and hy rogen', as set forth.

an alloy'of In testimony whereof I affix my-signature 4 in presence oftwo witnesses.

HARLESTON GounmrrerSnEa,

Ewecutm'a; of George WyG sner, deceased.

Witnesses v I HEN-RY Q. Howe, r -G-EORGE S.-"OAnR.

. 4o The filtering-body preferably consists of a rigid plate or tube ofthe desired'porosity in- I

